Apparatus for treating oil



Oct. 6, 1925. 1,555,976

L. C. HUFF APPARATUS FOR TREATING OIL Filed April 14. 1925 `Patented Oct. 6, 1925. l

UNITED STATES.

PATENT o'FFICE.

4 LYMAN C. HUFF, OF'CHICAGO, ILLINOIS, ASSIGNOR TO UNIVERSAL OIL PRODUCTS COM- IPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF vSOUTH DAKOTA.

APPARATUS FOR TREATING OIL.v

Application led April 14, 1923. Serial No. 632,019.

To all whom t may/concern.'

Be it known that I, LYMAN C. I IUFF, a citizenof the United States, and resident of the'city of Chicago, county of Cook, and' p throughthe transfer line 14 regulated by a.

State of Illinois, have invented certainnew and useful Improvements in Apparatus. for Treating Oil, of which the following 1s a specification. l

This inventlon relates to improvements inan apparatus for treating. oil and refers more particularly to that portion of the apparatus utilized for recycling reflux condensate.

Among the objects of the invention are t o provide'an apparatus by means of which-oil vmay be returned from the dephlegmating stage to the heating stage either through a pump or by-pass in which is positioned a valve which permit-s the pump to be eliminated from the system.

The single figure is a diagrammatic side elevational view of the apparatus.

Referring to the drawing, the oilto be treated is introduced from any convenient extraneous source through the line 1 and is charged into the top of the dephlegmator 2 where it' is Vutilized as a refiuxing medium traveling in an opposed direction to the hot vapors which rise through the dephlegmating columnand separating out lthe high boiling point fractions as reflux condensate. Besides takingthe-form of a reluxing medium, the introduction to the dephlegmating collumn provides a means for preheating the o1 The oil with-what condensate it may collect in the de Ahlegmating column flows down through the dephlegmator le 3 and is drawn o through the line 4 Whic is regulated by 'a valve 5. The line 4 terminates in a T connection, one arm of which is connected to a pipe 5 which introduces liquid to the suction side of the pump 6. The other arm of the T has connected thereto a pipe 7 in which is interposed a check valve 8. The opposite end of this line 7 communicates with the line 9 Vwhich is connected tol the discharge side of the pum 6 and has interposed therein a valve 10 or controlling the flow of the liquid therethrough. The

vpump may be either of the rotary or reciproably heated by gas burners shown at 14.

The oil after passing through the heating coils has been raised to a conversion temerature subsequently being discharged valve 15 to the expansion chamber 16.-

In'the expansion chamber the oil is collected in a considerable body Where it is vapori'zed, the vapors passing oi throu h the line '17 regulated by a ,valve 18, whlle the unva'porized,l residual products may be drawn olf from any of the residuum drawof lines 19 controlled'by valves'20 which.

aretapped into the expansion chamber' at different hei, ,rhts,v 4Tricocks 21 ,are positioned at different levelsA on the expansion chamber in order to ascertain the height ends of the expansion cham*4 r are remov able 1n order to facilitate cleanlng. j

. The evolved vapors passmg over from the .of the liquid therein. The u per'and .lower I expansion chamber rise through .the dephlegmating column-where they are subjected to the. cooling or retluxing action of the raw oil, after which the still-vaporized, i

portions pass off through the line 22 to a water condenser 23 and are finally collected as liquid distillate in the receiving tank 24.

-The receiving tank is equipped with a pressuregauge 25, liquidlevel gauge'26, a pressure relief valve 27 and a liquid draw-01T produce the "desired -velocity of the oil through the heating tube. At the. same time thispum is `not totally relied upon, as a by-pass ine 7 is furnished by means of which the 'pump may be cut out of the s stem and the retiuxV condensate recycled ue to .the 4head maintained in the refluxing column. By installin -a check valve in theby-pass line in .case o -failure of the .pump

A which circulation is at times insufficient to Vfor any reason, this oil line wouldibe autoing oli' the valves l0 in theline 9 and the` ya v inatically opened and delivertheoil to the heating tubes. In normal operation-while the pump is workin the check valve-8 will be closed due to the 'ferential pressures between the suction and discharge sides of the pump. Thus the check valve provides'lan automatic means of recirculating the oil through the tubes'in case the positive means or circulating pump fails. Thiscirculationv through the by-passV line would dpendwholly upon the'` gravity head of liquidbuilding up in the reflux leg.

In case of failure ofthe pump it may be wholly eliminated from the system by close 30 in the line 5,- resulting in the il` passing entirely through itlieiby'jpas s :liiief to the heatcoil. -v Inl addition to the -recyclin ofthe refluxI condensate, the mixture of re tubes in the manner explai I claim as my invention;l fj' p p j 1. In an apparatus fortreating. oil, ,the combination' with a heating coil through which a stream' of oil is passedto be heated.l to a cracking temperature,anfenlarged' con-1 lates, afeeding line leading from said re- 'ceiver tosaid heating coil, a pump disposed version chamber receiving said' highly beati ed-oil and in which' chambera vsubstantial portion thereof vaporizes, of adephlegmatr- *ing means connected to the conversion cliam-y ber, a recycling line for returning the reflux'v condensate to the heating means for retreatment, a pump interposed in said line, abbypass around the pump and av check valve in said by-pass whereby the recirculation continues automatically with the failure of the pump by head pressure.'

condensate and raw oil will'be charged to 'the'lieating phlegmator, means for passing vapor from said chamber to said dephlegmator, a re- Yflux' collecting line extending from said dephlegmator in which a body of 'reflux oil accumulates, means for rec cling said reiux condensate through sa d heating coil comprising a recycling line, a pump inter- -posed in said line, and-a by-pass around ,said pump, and an automatically acting valve in said by-pass for feeding reflux oil by head `pressure to said heating coil .in the event said-pump becomes inactive. y 3.' In an apparatus for treating oil, the

,combination with a heating coil, of a furnaceinvwhich said coil is disposed, an enlarged conversion chamber adjacent said g '-coil, means for transferring heated oil from Q5-"the coil to said conversion chamber, a dephlegmaton'means for discharging vapors generated from said oil to said dephlegmator, a reflux receiver disposed below said dephlegmator 1n which reliux Aoil accumu# in said line, a by-pass extending around said pump, and means 1n said by-pass for pre ventin the passage of refiux oil therethroug i when said pump is operating, said means acting automatically to permit reflux oil to pass around said pump through said by-pass when said pump is inactive.

LYMAN C. HUFF. 

